Snowplow



Aug.. 28, 19213.

L. JOHNSON SNOWPLOW Filed Sept. 28. 192i 3 Sheets-Sheet 1 INVENTOR.

Win 3555.

ATTLORNEY.

Aug. 28, 1923. 1,466,046

I ATTORNEY.

Aug. 28, 1923. v 1;466,046

L. JOHNSON 59555156 I INVENTOR.

' ATTOREIY.

Patented Aug. 28, lQZBO arena its pnnsaorrnson, or IRON MoUnrArN, MICHIGAN."

snowrnow.

Application filed Septemben28, 192-1. Serial No, 51 3,82 6;

. To all whom; it may concern:

.Be it known that I LAnsJoHNsomacitizen of the United States, residingat Iron] Mountain, in the county of Dickinson and. State of lv iiehigan, have invented cgrtain- 'now rollers or guides disposed on opposite sides of the supporting wheels, for properly maintaining the plow in its operative position on the track. v 1 I A still further object of the invention is the construction of a'snow plow of the class above set forth, wherein the plows are provided with double operating means for raising and lowering the same totheir inoperative positions, including further provision for independently disengaging V the guide wheels from the tracks as when passing over switches. I

Another and very important object of the invention is the provision ofa snow plow designed forjuse forcleaning and clearing heavy snow drifts from a railroad road bed, and one in which the parts are extremely simple in construction, easily assembled, rigid and durable, highly efficient in operation, practical and capable of being manufactured at a very low costwhereby its commercial possibilities are greatly enhanced.

The invention will be best understood from I a consideration of the following detailed description taken in connection with the accompanying drawing forming-a part of this specification, with the understanding, however, that the invention-is not confined to any strict conformity with the showing in the drawing, but may be changed and modified so long as such changes and modifications mark no material departure from the salient features of the invention as expressed in the appended claims.

I attain these objects-inthe accompanying drawings, -wherein;. L I

Fi re 1 is a side view of the plow lookin from'the'left.

igure- 2 is a plan.

Figure 3 a longitudinalsection showing the guides.

in mechanism and rigare. 41S a detail View or guid lief V Figure 5 is a sectional view taken. on line 5-5 of Fig.2.

Referring now to the drawingsxwherein like reference characters designate corresponding parts throughout the several views, I 7

the frame or body of the plow comprisesa lOIlgltUdlIliLl, heavy beam 5, side and end.

connecting beams 6, 7, which constitute the;

triangular framesupporting structure. for

the plow shares, subsequently to be referred to, a singlefront, flanged wheel 8, rota-table on its shaft 9,;and the rear flanged wheels 10 andlll and. their axle 12 journalledgin suitablebearings 13 are adapted'to sup portt '55 I the operating. mechanism of the plows and,

the frame andthe plow on the tracks 15' in the manner well understood.

.The said frame is also. provided transverse brace: bars 16, 17,18, connecting --the beams -5 and-6 of the; frame which pro- Mounted in suitable and producing a V onthe beam 6,1 have provided a rock shaft' 21, whichcooperates'with a, short rock shaft.

1 22, mounted in suitable bearings;23- and 24,

on the side beanie. Suitablyconnected to. the respective rock shafts I haveprovided a plurality of. slightly curved standards 25,

to whichthe mold board 26'is connected, as

wellas the:z mold board 27, on the opposite side thereof, the respective mold boards meeting attheir forward ends and being curved as shown as at;28 .for properly'digging into a snow, drift and deflecting. the

same to; both sides of the track. The respective standards 25 are connected to the braces 16, 17, by diagonal braces 29, 30, a U-shaped v plate 31 being provided at the upper end of the said braces 29, 30,:to permit of the vertical movement ofthe plow 'shares when V the sameare to beraised to their inoperative position from the track. H A transverse top cross bar 32" connects certain of the standards Jof the: respectiveimold boards 26,27, as clearly shown by Fig; 20f the'drawings I Referring now-particularly to Figures 2' and 3, it will be Observed that each rock shaft 21, 22 is provided with an angularly extending lug. 32 connected by links 33 to a lever 34:, said-lever being pivoted intermediate its ends at 35 to a supporting post 36 and connected at its opposite end by links 37 to an actuating lever 38, disposed rearwardly of the frame and pivoted as at. 39 to a short post 40 mounted on the cross beam 17. By reason of thisconstructiom-it will be readily seen that upon actuating the lever 38 i the same will rock the shafts 21 and 22,

' which are connected by means of radially I compressed steam from the engine, 'said extending arms 21 with the standards 25 and consequently raise the plows suiiiciently I to clear the track and be moved to their inoperative positions.

however, it is desired to accomplish the same purpose through the intermediary of a longitudinally extending rod 41, operable by rod 41 being connected by a link 42 to abelt crank lever 43, said belt crank lever; being connected in turn by a link 44 to the lever 34:,

at a point adjacent its rear end, as clearly. disclosed by Fig. 3 of the drawing.

It will thus be seen that I have provided botha mechanical and a manually operable mechanism for raising the mold board so. thatshould the mechanical means be discon-- nected the manually operable mecha'nism may be resorted to for actuating the levers to dispose the respective plows for. the purwheel.

nected to a lever 50, operable over a tooth sprin pose intended.

In order to properly maintain the plows in their working position and offset the inward strain on the mold boards when engaging heavy sriow drifts, I have provided guide rollers on each side of the frame, one adjacent the front supporting wheel 8 and V the other adjacent the diagonally opposite wheel 10. The front guide roller 45 isconnected by an arm 46, pivotally connected to one of'the standards, the said roller being grooved, as'shown at a7 to engage the top flange of the rail and on the opposite side 'ofthe flange 48 of the front supporting A lifting arm 49, pivotally conrack 51, is further provided with the usual pressed pawl '52 and actuating rod 53, w ereby the guide'roller may be moved to its operative and inoperative position from a point adjacent the operating lever 38, which raises the plows above referred to. The guide roller 46 disposed adjacent the wheel 10 is similarly constructed, but in this instance it will be observed that the tooth rack 54,mounted between the rear bar 7 and the brace bar 16 is'at right angles to the mold board 26, so that the actuating rods 55 of the lever 56 and spring pressed pawl 57 may be actuated from a position adjavcent the ends of the actuating-rod 5 3 and 'the'=-lever 38, above referred to. In each In actual ractice.

instance the actuating rods are supported by suitable guide fi'f, 58, as clearly shown by Fig. 3 of the drawing.v I s v A balancing weight 58 is positioned on the guide beam 5 and preferably at the rear end thereof to offset the weight of the mold board 26, which as shown extends throughout the entire length and on one side of the frame, and as thevusual coupling 59, preferably connected intermediate 'the rear beam 7 provides for the ready attaching' of the snow plow to'the front of an engine, whereby the same may bemoved over the track bed to 'perform the work intended. I v r In the accompanying "drawings, I have illustrated my invention embodied in one form by way of example, and which in prac tice has been found to be highly satisfactory in obtainingthe desired'results. It will be obvious, however, that other embodiments maybe adopted, and that various changes in the details of construction may beresorted to by those skilled in the art without departing from the spirit and scope of the invention. It is furthermore .understood that the invention is not necessarily limited orrestricted to the precise elements shown except in so far as such limitations are spec ified in the subject matter being claimed.

Having thus described my invention what I claim as new and desire to secure byLetters Patent ofthe United States is 1. Ina snow plow,'the combination with a triangular frame, supporting wheels carried by the frame disposed in a vertical plane for engaging railroad rails, slidable moldboards carried by the frame, and angularly disposed wheels carried by the frame for engaging the sides of the railroad rails;

2. In a snow plow, the combination with- V a car body, curved standards and mold boards carried bythe body and mounted on each side thereof, rock shafts journalledin bearings on the sides of the/frame, lugs extending inwardly from each of the rock shafts, a pivoted lever and links connecting said lever to said lugs, and means for actuating said lever and 'rock shafts to raise.

rollers operable from a position at the rear end of said body.

4. In a snow'plow, the combination of a car body, curved standards and mold boards carried by the body on each side thereof,

rock shafts connected to the standardgof the respective mold boards, means for manually actuating said rook shafts to raise and lower the mold boards track engaging rollers oneach side of the body, a supporting arm for each of said rollers pirzotally attached to the inner sidesof the mold boards, and manually operable means for drawing either of said rollers into'inope'rative posi 10 tion When the mold boards are raised and lowered.

In testimony whereof I afllx my signature I in presence of two witnesses;

LABS OHNS ON.

VVJflznesses:

EDWIN HOAGLUND, RANGER 'sANDIBERGa 

